From: Marcelo Tosatti <mtosatti@redhat.com>
Date: Tue, 12 Jun 2012 02:18:33 +0000 (-0300)
Subject: x86: kvmclock: remove check_and_clear_guest_paused warning
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e32025a56403df4386cd61a741c0a36afe79ae8a;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

x86: kvmclock: remove check_and_clear_guest_paused warning

CPU offline path calls the hrtimer interrupt handler with interrupts
disabled, without touching preempt_count, triggering this warning.

Remove the warning since it is supposed to be used from hrtimer
interrupt context only.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---

diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c
index 086eb58c6e80..f1b42b3a186c 100644
--- a/arch/x86/kernel/kvmclock.c
+++ b/arch/x86/kernel/kvmclock.c
@@ -120,11 +120,6 @@ bool kvm_check_and_clear_guest_paused(void)
 	bool ret = false;
 	struct pvclock_vcpu_time_info *src;
 
-	/*
-	 * per_cpu() is safe here because this function is only called from
-	 * timer functions where preemption is already disabled.
-	 */
-	WARN_ON(!in_atomic());
 	src = &__get_cpu_var(hv_clock);
 	if ((src->flags & PVCLOCK_GUEST_STOPPED) != 0) {
 		__this_cpu_and(hv_clock.flags, ~PVCLOCK_GUEST_STOPPED);